Spectral functions and negative density of states of a driven-dissipative nonlinear quantum resonator
We study the spectral properties of Markovian driven-dissipative quantum systems, focusing on the nonlinear quantum van der Pol oscillator as a paradigmatic example. We discuss a generalized Lehmann representation, in which single-particle Green's functions are expressed in terms of the eigenst...
| Main Authors: | , , |
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| Format: | Journal article |
| Published: |
IOP Publishing
2019
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